Molding apparatus.



J. E. WILCOXBN. MOLDING APPARATUS.

APPLIoATIoN FILED 11116.17, 1912.

1 1,059,251. Patented Apr. 15, 1913.

wh/wwe i UNITED l' STAT/ES? `IAIIISJNTy OFFICE.

JOHN E.` WILCOXEN, 0F SOUTH BENI), INDIANA, ASSIGrNOR TO THE STUDEBAKER COIR.-`

PORATION, OF SOUTHIBEND,.I1\TDIANA,LA CORPORATION 0F NEW JERSEY.

MOLDING-l APPARATUS. l

Specification of Lettersatent; l Appucationmea August 17, 1912.` seriarNarwaa Patented Apr. 15, 1913.1

certain new and useful Improvements in` Molding Apparatus, of vvhichthe following is a specification.`

This invention relates to an improvement in molding apparatus and is particularly adapted for use Where a slender coreiof con? siderable length is employed." The diiiiculty encountered `under thesel circumstances lies in locating the core `accurately and mainn taining it 1in position, and further inthe fact that molding; sand 1 is so` fragile lthat when a core or like structure is n formed therefrom, it is extremely likely to be broken or displaced lpriorto or during;` the pouring so that `the `mold or `the castingis destroyed. Indeed, the .Whole .core is `liable to fall to pieces asa result of a slight jar or unusual shock.

It is the purpose of my present invention to provide means by which the end ofsuch a coreiscaused to interlock `vvith and thus be positioned relatively `tothe print, thetinterlocking end beingzmade of molding or other resistive materiali which possesses considerable rigidity. I also provide means by which the core maybe `reinforced throughout its length to prevent its collapse under ordinary conditions of use. i

In .the accompanying ldrawings I have illustrated my invention as applied to the manufacture of axle skeins,ibut various articles may beproduced in ithe practice of my invention. i

Figure l is a vertical axial sectionofa pattern in connection With `Which my improved core `tip and lreinforcing device is shown. Fig. 2 is a similar isection `showing a mold and core to Which thetip and reinforcing device of my invention are applied, the core and tip being shown in elevation.

Referring `to thedrawings there 1s illustrated a pattern 1 of a hollow conical device as an aXle skein. Thetpattern is :formed with a central conical chamberi2,twhich may be termed a core chamber and `which acts as i a core boX. The external surface 4 of the pattern is adapted `to form a mold print to reproduce the external surface of the skein or other article to be` cast, While `the `core chamber is of a shape corresponding tothe inner `faceof `the skein and the `pattern is` shown as formed to be used with a two-` part flask to produce a mold print in the` `cope and a core print in the drag at the samer operation. The upperend of the chamber at 3 is of reduced dimensions so that the` corresponding portion or tip of the core `6M is in the form of a slender tapering peak.:

As a body of thisform composed of the ordinary moldingsand would be extremely unstable, I `form this tip of material havingconsiderable rigidity, and `for use in handling the tip and as a reinforcement. for thecore, Itprovide `a shank 7, which isse` cured to the tip and extends substantially the Whole length of the core chamber; in the.

embodiment shown terminating in a ring 8,:

which may be used as a grip,

To forma socket or recess in the print to t receive the end 9` `of the tip and thus position and support the core, I provide an ex-` tension 5 lat the upper end of the pattern. This is preferably of the same cross-sectional areaA as isthe end 9 of thetip 6,and

8O applied is of the type shown, that is, a pati tern mounted on a plate 10 and having an internal` core `boxeo as to form a mold print 1 Where `the pattern` to which the invention is in the cope and a core print in the dragpI form this portion of thepattern of such`didrawn from the mold after tamping and the mold sections are reassembled the two sections ofthe pattern, e., the core print 13 tance equal to the thickness of the plate so t 1 mensions that the distance from the top sur` i face ofi the extension 5 to the upper endof the core chamber is equal to the thickness of the platea Thus, when the patternis Withi that the end 9`of thetip `6 enters the socket i or recess 12 in the `mold formed by the extension pthus the core is accurately positioned'and supported Within the print and displacement of the core during pouringor as a result` of any slight jar is prevented; further, the core is reinforced throughout its length by the shank 7 and the stability` of the core thereby greatly increased.

While my invention has been described in connectionwith a pattern of a particular1 type for use in producing a certain kind of casting, namely, axle skein, I desire to yhave it understood that the invention is not limitedgto these-details, but may be applied to various types of patterns and-v to the production of hollow castings of any variety. What I claim and desire to secure by Letters Patent ist: Y

l. Almolding apparatus consistingofa pat-tern having an external mold printforming surface, and an internal'core print forming chamberrth'e pattern having an external projection and the core 'chamber' hat/ingle recess-of the'esame cross-section and similarly placed so the corresponding parts of the mold and core register.

2A molding apparatus consisting @fha l pattern having an external mold print forming surface and an internalcore print forming chamber,y the pattern havingan external projection and the core chamber havingl a re-4 cess of the same cross-section and similarly placed so 'the'fcorrespondingp'artsjof the f mold and co'rje register and acoretip toA fit the .recess and made of material of `consid-- erablje rigidity.'

3. A molding apparatus coneistingof' pattern having an external mold print forming surface and an internal core print fernling lchamber, the pattern having ane'xternal projection and the core chamber having a recess of the same cross-section and similarly placed soj the correspondingfparts of the mold and core register and a core tip yto fit kthe recess and made of `material of considerable rigidity; and a reinforcing member for the core securedto the tip.

yio

41 A molding apparatus consisting of a pattern having an external mold print form'- ing `surface and an internal lc'o're forming chamber, av pattern (plate. to Which the pattern is secured, the pattern having an external projection and the core chainber having a recess ofthe same cross-sec-` tionalafrea and correspondingly placed and Wit-h corresponding pointsin they core chamber and moldprint surfaces spaced by the thickness o f the plate. 4 f

5'. A molding `apparatus consisting` of a pattern having an external moldprint forming surface and an internal core chamber, a

pattern. plate to which thepattern-'is secured the pattern having an external projection and the core chamber havlng a recess ofthe same cross-sectional area and havlngthelr lcorresponding points `'spaced by the' thickness of theplate and a core tip made of rigid material to fit the recessl 6: A. melding .apparatusConsisting 0f a pattern having an externalmold print formf ing surface and aninternal core chamber, al

pattern plate yto whichy the pattern nis secured, the pattern having an external projection andthe core chamber havingfa recess e of the same lcrosssectional area-and With the 4 cerresponding points of the surfaces of the projection andfrecess spaced by the thickness of the `plate and a 'ooretip made of rigid nija- Y terial `to {it-'tbe reofessi Iand a reinforcing member for the 'ocre secured to tnetip. f l 17. A pattern tojforrnva core of v ferm With a taperingextremity and al oft form a corresp'fonding print in 'the meld te receive said 'o'ore and eoi'npletethe moldin combination with a member corresponding n in forinfvvith that part ofthe pattern vadapt-V ed tri-form the extremit'yof theere said member being made of molding materialgot n stable quality and `Atliefdnepattern', Y

inthe space-tio 'vvholf'it conforms as stated,- ond a rod at que end oftvhioh said member is mountedwhiohjrodvvhen said Inernb placed the chamber-as statedis the axis ofl said st'antially in the"line of core chamber. v i l 8. A patternA toforniva 'core of conical form with a taperingextreniity, andate-oto form a corresponding 'print intheinrold to receive said core', the pattern Vbeing' of a form to produce a recess inte nicldvvith which the of tbe "core registers when the 'parte of the-mold are brought :toa`

'getlier ineombination with a member oor-'p responding 'in form with. that' parted' the pattern adapted to fornithe tapering exs trerni'ty of. the e'ordfsaid memberb-eing made of molding materialofstable quality and-seti into the core patternin'the space to which it conforms as stated',b and a rod `rat one end of which said menib'e'ris mounted Which rfo'd when said member placedhintlie eore pattern as `stated` is substantially the' llaine county `of loo 

